Cylinder head for internal-explosion engines



Feb. 10, 1931. E 1,792,057

CYLINDER HEAD FOR INTERNAL EXPLOSION ENGINES Original Filed March 12, 1928 INVENTOR.

yauiguf'afim A TTORNEYS.

Paten d Feb. 1d, 1931 UNITED STATES PATENT oFF cEi IRVING E. ASKE, OF MINNEAPOLIS, MINNESOTA CYLINDER HEAD FOR INTERNAL-EXPLOSION ENGINES Application filed March 12, 1928, Serial No. 261,083. Renewed July 2, 1930.

My invention relates to cylinder heads for lilternal explosion engines, and has for its ob ect the provision of an improved cylinder head adapted to avoid material accumulations 5 thereon of carbon and rust.

Engineers and mechanics are well acquainted with the troubles, including knocking, arising from the accumulation of carbon on the combustion chamber side of the cylinder head, but no attention seems to have been given to the rust, dirt and scale that accumulates on the face of said head which is exposed to the cooling liquid, or to'materially reducing the thickness of the combustion chamber cover.

It is common to make such cylinder heads of cast iron, which tends to rust, and to which scale and sediment readily adhere; which heads are also required to be made thick and 9 heavy explosion.

In many localities the quality or character of the cooling water or liquid is such that it tends to deposit large quantities of scale or sediment upon the cylinder head whereby the cylinder head isprevented from rapidly radiating its excessive heat into the cooling liquid.

I have observed that knocking occurs in high compression engines even when highly volatile gasoline hydrocarbon composition or vmixture is used as fuel, and I am confident that in such case the knocking is in large measure due to rust, scale, or sediment on face of the cylinder head which is exposed to the cooling liquid and to the thickness of the combustion chamber cover whereby radiation is retarded. Since the compression ratios generally approved by the art appear to be rapidly advancing or growing higher, it is urgent that a cylinder head structure be devised which will withstand the gr'eater strains of fuel explosions and which will very rapidly transmit the excessive heat to the cooling liquid.

. One object of my invention is the provision of a cheap, durable liquid cooled cylinder head containing a cooling liquid circulation chamher and embodying a thin heat transrmttn g,

rust and scale resisting partition plate or diato withstand the pressure of the fuel phragni conn'non'to said circulation chamber and to the combustion chamberof said cylin der. With these and other objects in view, my invention consists of the structures, comblnations and arrangements of parts hereinafter described and claimed;

' In the drawings, Fig. 1, is a bottom plan view of a cylinder head embodying one form of my said invention. Fig. 2, is a vertical longitudinal section through said cylinder head on the line A-B of Fig. 1. Fig. 3 is a bottom plan view of one form of the hereinafter described partition plate. Fig. 4, is an edge viewof said partition plate. Fig. 5,

is a vertical transverse section of said cylinder head on the line C D of Fig. 1. Fig. 6 is a top plan view of a modified form of said plate, and Fig. 7, is a side elevation of said modified form.

In the drawings, 1 is a thin steel partition 7 plate of any suitable vertical and horizontal contours, positioned between the cover 2 of a liquid circulation chamber 2a,'and th come bustion chamber of an internal explosion engine (not shown, but well known to the art); said partition plate being common to said circulation and explosion chambers and adapted to form a partition there-between. The surfaces of said partition plate are pref-- erably smoothed or highly polished and are of any suitable heat enduring and conducting and rust resisting material, which may for example, be provided by plating the partition plate with chromium, or by constructing it entirely of chromium'steel.

Said plate is apertured as at 1a for the I passage of a socket 212 formed on said cover for the reception of a spark plug (not shown, but well knownto the art), and said plate is welded at its periphery in any suitable manner to said liquid chamber cover, preferably to an inwardly directed flange or shoulder 20 formed on said cover and adapted to overlap the cooling chamber face of said plate for a short distance. Said plate is preferably also Welded at the edge of said aperture to an annular shoulder 2d formed on said socket and adapted to overlap the cooling chamber face of said plate for a short distance.

Said cover is provided at any suitable point or 'oointswithports, asat 2e, 2e, adaptedto communicate with the liquid chamber within said cylinder head and with water circulation conduits (not shown) exterior to said head. Bolt holes 2f are provided in said cover for the passage of bolts to secure said cylinder head in operative position upon the cylinder.

In operation, said plate by reason of its rust resistant surface material, and its polished surfaces and clear area ofiers no effective lodgment to carbon on its combustion chamber side, or to rust, scale or sediment on its liquid circulation side, said carbon being blown out by the exhaust and said scale or sediment being washed away by the cooling liquidj By welding said partition plate to said cover, better transmission of heat between the edge of said plate and said cover is secured. Said flange and shoulder of thick metal form substantial abutments for the thin steel plate, and by constructing said plate of steel, I am enabled to make it thin and of high radiation capacity.

signature. V

7 IRVING E. ASKE.

I am aware that a two-piece cylinder head containing a water circulation chamber and comprising a circulation chamber cover and a partition member detachable from said cover, said partition member having a spark plug socket formed therein, is per se, old; but my claims are not intended to cover such structure.

What I claim is 1. A combustion chamber head containing a liquid circulation chamber and comprising a cover for said circulation chamber, said cover having a depending spark plug socket formed thereon, said cover having an inwardly directed flange formed thereon and said socket having a peripheral shoulder formed thereon, and a partition plate common to said circulation and combustion chambers, said partition plate being apertured for the passage of said socket, said partition plate overlapping said flange and shoulder and being welded thereto.

2. A combustion chamber head containing a liquid circulation chamber and comprising a cover for said circulation chamber, said cover having a spark plug socket formed thereon, a partition plate common to said combustion and circulation chambers and embodying a rust resisting surface, said plate being apertured for the passage of one end of said plug socket, said plate being welded .at its periphery to said cover and at the rim of said aperture to said socket.

3. A combustion chamber head containing a liquid circulation chamber and comprising a cover for said circulation chamber, said cover having a spark plug socket formed thereon, and a polished non-corrosive partition 1plate common to said combustion and circu ation chambers, said plate bein apertured for the passage of one end of sald plug 

